Revert most of "Cleanup: Delete dead code."
This reverts most of commit 2582f02a01cd56c56a4e6c9de4444a6ec937cc37.
The DNS cache flushing code needs to be called when routes change.
Change-Id: I5b04121bc428cc6a2e136b6c3269c395bfb4981f
bug:16549455
diff --git a/libc/dns/include/resolv_netid.h b/libc/dns/include/resolv_netid.h
index f1b8892..e5521b8 100644
--- a/libc/dns/include/resolv_netid.h
+++ b/libc/dns/include/resolv_netid.h
@@ -61,6 +61,9 @@
extern void _resolv_set_nameservers_for_net(unsigned netid,
const char** servers, int numservers, const char *domains) __used_in_netd;
+/* flush the cache associated with a certain network */
+extern void _resolv_flush_cache_for_net(unsigned netid) __used_in_netd;
+
/* delete the cache associated with a certain network */
extern void _resolv_delete_cache_for_net(unsigned netid) __used_in_netd;